Can i get help on 23?

(hurry! ) which expression is equivalent to the following complex fraction?

]supplementary angles are two angles that add up to . • complementary angles are two angles that add up to degrees. • adjacent angles share a and a • congruent angles have the measure. • an triangle has one angle that is greater than 90 degrees. • a triangle with angles 45°, 45°, and 90° would be a triangle

Which rule describes the composition of transformations that maps △abc to △a”b”c